My husband likes smoking weed
occasionally. He just quit cigarettes yesterday, because I quit with
him, but since you don't smoke, (which is good) I suppose that doesn't help.
However, I sympathize with you. When My husband smokes weed, it teaches him that boredom is ok and being lazy can be fun, which to me isn't so great. I also get sick when i smell weed so it drives me nuts.
My suggestion is to find out why he smokes. (weed +cigs) what taught him that it was a good thing?